2013
Functional vacuolar ATPase (V-ATPase) proton pumps traffic to the enterocyte brush border membrane and require CFTR
Collaco AM, Geibel P, Lee BS, Geibel JP, Ameen NA. Functional vacuolar ATPase (V-ATPase) proton pumps traffic to the enterocyte brush border membrane and require CFTR. American Journal Of Physiology - Cell Physiology 2013, 305: c981-c996. PMID: 23986201, PMCID: PMC4109618, DOI: 10.1152/ajpcell.00067.2013.Peer-Reviewed Original ResearchConceptsV-ATPaseCystic fibrosis transmembrane conductance regulator (CFTR) channelV-ATPase complexV-ATPase functionBrush border membraneProton effluxRat Brunner's glandsIntestinal cellsCAMP/PKACaco-2BBe cellsBorder membraneApical domainCoimmunoprecipitation studiesCFTR distributionVacuolar ATPasesSubapical cytoplasmSpecific subunitsCAMP stimulationProton pumpCAMP treatmentEnterocyte brush border membraneSodium-hydrogen exchangerHydrogen exchangerApical membraneCFTRCharacterization of CFTR High Expresser cells in the intestine
Jakab RL, Collaco AM, Ameen NA. Characterization of CFTR High Expresser cells in the intestine. AJP Gastrointestinal And Liver Physiology 2013, 305: g453-g465. PMID: 23868408, PMCID: PMC3761243, DOI: 10.1152/ajpgi.00094.2013.Peer-Reviewed Original ResearchMeSH KeywordsAcetylcholineAlkaline PhosphataseAnimalsCyclic AMPCystic Fibrosis Transmembrane Conductance RegulatorIntestinal MucosaIntestine, SmallMaleMicrovilliProtein TransportQa-SNARE ProteinsRatsRats, Sprague-DawleySodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersSodium-Potassium-Exchanging ATPaseSolute Carrier Family 12, Member 2ConceptsCHE cellsNeighboring enterocytesVacuolar ATPase proton pumpCystic fibrosis transmembrane conductance regulator (CFTR) Cl(-) channelDouble-label immunofluorescence microscopyEightfold higher levelsBrush border membraneRegulatory factors NHERF1Crypt-villus axisCFTR abundanceSyntaxin 3Myosin-1aApical domain
2001
Anomalous apical plasma membrane phenotype in CK8-deficient mice indicates a novel role for intermediate filaments in the polarization of simple epithelia
Ameen N, Figueroa Y, Salas P. Anomalous apical plasma membrane phenotype in CK8-deficient mice indicates a novel role for intermediate filaments in the polarization of simple epithelia. Journal Of Cell Science 2001, 114: 563-575. PMID: 11171325, DOI: 10.1242/jcs.114.3.563.Peer-Reviewed Original ResearchConceptsIntermediate filamentsPolarized epithelial cellsApical membrane proteinsEpithelial cellsSyntaxin 3Apical domainFemale sterilityMembrane proteinsApical markerNovel functionGamma-tubulinNovel roleApical poleSimple epitheliaCell typesColorectal hyperplasiaCK intermediate filamentsNull micePhenotypeBasolateral levelsNecrotic cellsMembrane phenotypeCellsFilamentsCytoplasm of enterocytes